free antivirusTrend Micro Internet Security 2008 (PC-Cillin) is an anti-virus cum anti-spyware software available for the Windows XP and Vista.

The software also includes a NetNanny like web filter to help you block websites that you think may be inappropriate for children.

Trend Micro just launched v. 2009 of their Internet Security suite but if you don’t need all the new features, here’s a chance to grab the previous version of Trend Micro Internet Security suite for free.

Just download the trial version of Trend PC-cillin software and use the following serial number to convert your trial into a full retail version.

PFEP-9991-7436-4997-1545

This is perfectly legit offer and is part of a promotion between Trend Micro and residential Internet customers of HTC ISP.

*In case the offer expires by the time you read this post, check this list of free anti virus software. Thanks Fatwallet.